Plot hole: Any invisible man would be blind. This is because if your retina in the eye is as transparent as an invisible man's, any image that can form on it will pass right thorough it without generating any vision signal via optic nerve. Thus your brain gets no visual signal if you are invisible.
Plot hole: The arms dealer tells Special Branch detectives that Charles Calthrop - wrongly suspected to be The Jackal - barely escaped with his life when Rafael Trujillo, the dictator of the Dominican Republic, was assassinated in 1961. "The whole regime collapsed within hours." He tells them, relating how Calthrop was with the Police Minister at the time and had to flee, bribing a fisherman to take him off the island in order to escape the angry mobs of partisans who were rioting in the streets, indiscriminately killing anyone they thought had collaborated with Trujillo's regime. What cobblers. There were no partisans and no riots. Trujillo's regime continued uninterrupted. His brother Hector immediately took power and ruled absolutely and ruthlessly for another eight years. Calthrop would have nothing to worry about unless Trujillo himself had signed his pay cheque. Calthrop's alleged involvement in the assassination is a hugely important plot point as it inadvertently leads to the discovery of the false passport obtained by the Jackal and the uncovering of his false identity, and his name was only placed on file because of his rumoured involvement in events which simply did not take place.
Plot hole: In the Book "Debt of Honour", Clarke and Chavez use a specially modified flashgun that stuns without killing. Why is this piece of technology not available for their team in Rainbow Six?
Plot hole: In the first Kingdom Keepers book it is established that Wayne created the DHI's because only they can see the characters come to life. However, later on in the book the park visitors can see and follow Maleficent.
Plot hole: It is revealed in the book that Melancholia's reflection is killed instead of Melancholia to cover their tracks. But reflections are frequently described in the book to be able to be spotted by sorcerers "a mile off." And yet not one Sanctuary Agent or the cleanup crew notice and alert the Sanctuary or Skulduggery.
Plot hole: In chapter 19, while talking about Leah Rose, it is stated "She and Rayford had spotted the seal of the believer. Otherwise she might have never given him the time of day." Fact is, when she is introduced in the series, it is Buck whom she meets and they notice the mark of the believer on each other's forehead. When she meets Rayford much later, they both already know each are believers.
Plot hole: In the 8th Wizard Of Oz book titled Tik-Tok Of Oz, the group runs into Polychrome, the rainbow's daughter. Polychrome and Shaggy Man first met up in book #5 titled The Road To Oz. However in this book, Shaggy Man and Polychrome act as if it is the 1st time they ever met each other. They make no mention of them meeting before in the prior book.
Plot hole: It took Ender only a few hours to unravel a mystery that 3 generations of highly educated and skilled xenologists and xenobiologists were unable to do. Pipo, of the first generation, was restricted by the rules imposed on him by the congress and he found out the truth but died because of it. After that Libo should have simply asked the piggies what happened and should have digged into the piggies' reproduction system, like he should have done in the first place as that is his job. Both Libo and Miro and Ouanda broke the rules so they shouldn't have had a problem with asking the right questions. They weren't afraid of the piggies either, loved them even. Libo would have had the answer to the reason for the death of his father and understood the piggies in a week, even though Novinha had hid the original data. If not him Miro and Ouanda would have had plenty of time to figure it out as well, just by asking questions. They would have learned a lot more about the descolada virus decades sooner as well, giving them more chance to combat it successfully.
Suggested correction: This entry first claims that it took three generations to find the solution, then states that individual in the first generation found it. If one xenologist can arrive at the solution from scratch, a literal genius like Ender can certainly rapidly come to the same conclusion using the data the next two generations compiled in the meantime.
They were all geniuses. The other 2 generations should have found out just a quickly or even quicker if they would have just simply done their jobs. It doesn't make sense.
But in Xenocide Miro's siblings like Ela, Olhado, Quarra and Grego are in the same league as Ender in intelligence, solving impossible questions without either Ender or Valentine even grasping it well enough to understand. Surely Miro isn't the only one lacking. They got that genius from their parents, the second generation xenologists Libo and Novinha who are both geniuses as well. At least the third generation should have figured it out long before Ender showed up. Mostly my point is they haven't actually done their job in all this time instead of them not being as smart as Ender to figure it out. Just ask the right questions like Ender did and voila. Its their job to ask questions but they didn't do it and their attitude towards the piggies is all wrong.
Plot hole: Mikael Blomkvist figures out Lisbeth Salander's code for her apartment's alarm system is 9777. This based on the numeric pads (found on phones) and the letters "WASP". However, the letters "WASP" would give the number 9277, not 9777. This at least happens in the Norwegian version of the book.